Machine gun



Dec'. 3, 194-0.

C. J. MICHAL, JR

MACHINE GUN Original Filed Sept. 25, 1936 2 Sheets-Sheet 1 INVENTOR.

ATTORNEY.

Dec. c. J. MICHAL, JR'

MACHINE GUN Original Filed Sept. 23, 1956 2 Sheets-Sheet 2 w wpmx hm M w wfi INVENTOR.

(A Sa ATTORNEY.

Patented 3; 194

chin-e J. MichaL'Jn; Hinsdale, 1i];

Iorigialmsgnaaen'sestembms,wgesefiaimof Y1: I

I. 102,100. jVDivi dedandthis applicatiorr 0ctoberf .7, 1937.SerialNo.167,814; e

- I liciaims. (011 12-49), I

j an auxiliary stock. the, converter, whereby my weapon is rendered:fiullyeutomatic or semiinvention relates to machine-guns and to devices 'ior converting otherffiifearms jinto ma chine-guns; I I I j More specifically myinvention relates-toan improved many-round magazine forluse with'the 1 fully automatic pistol of "my U. S'..Patent' No 2,056.975, issued October I13,"l936; orjwithf the semi-automatic convertible. fully automatic f I I pistol of mycopending application for U; HS," d patent; Serial No. 102,100, filed 'September 23,

scription progresses. My invention consists and the stock thereof-'which' are'definedfintheappended claims; and'o'f' which one embodiment 5 is exemplified 1n the accompanying.drawings',

. explained.

I Throughout tosimilar members. I I VI 0 Figure 1 is a side elevation. oi.;.my,.comp te' firearm, showing mymagazinei n plac;{

Figure. 2 is an enlarged/side elevationlof .the

a slant. slightly to thjrear offthe Iyiewpointof Figural. v I

zine, disassembled,

- Figure 4 is a rear elevation of'the cover-of my I 40 magazine, taken along the line 44 of Figure 2.

I Figure 5 is the view from the inside 'of the cover shown in Figure 4. m

Referring to the drawings; and more particularly to Figure 1, it will be seen that this figure illustrates' the conventional Colt automatic pistol of the United States Army, as modified in my 00-.

fully automatic or semi automatic at will.

' Referring to liigure'i, we see that H is .the well-known conventional I Colt semiautomatic pistol of the United StatesArmy. I2 is acorn.

I I features of the two above mentioned types of I I j In. addition'to the foregoing Iobject;,-: I have in the riotlfbfarps; and in the combinations and arrangements thGIGOf-f.

which areihereinafter particularly;described},an'd

" .'n l 'u -.;Lu rI H "of hisfconefland his portions' lil fand I 1;

li crt o n 61 t u lia an l t at-t e cartridges are presented; "to portion l 6 at the the: aesa aan; the same prefer}; 3 ence number is applied tune samelmfemberoif 1 magazine of myweapon; .theviewpointbein'g 'at Figure "3 is the fonawasaag of pending application, to render it convertibly.

bined forward handle and'blast deflector. I3 is automatic "at; will. And I5, is my improved magazine'.

eature I 5 is the subject -matter;oi thispresfent application. Features l2 ';l 3 and i4, and various eombinations of; all or some of the Ifour-Lfeatures are the subject matter of nylcopendirt 'g applicae -I rni g, owtq Figures" {are 6. for the was of I my magazine; we; see that part fl 6' identical;

to the. conventional Colt magazine, but withi-thej bottom removed. Parts ,1 I and l ii eonstitutei'the conventional. Lugermagaz e,jc'onsisting of I a truncated eonieal portion j I "I and a tangential portion I BP'I' connectthese two magazines together ,by'the intermediate fpo'rtion I91 Tlie angle (substantially atwhich I, set "th com I a azi to gL er Linaeaz n mediate f n.

important feature of my' nvention';"as willn w beexplained. 1'

'"It is at this point inflin' names "that slant above referred'to.

Tva t'j rdm e communal u ericdri's ru u ny atheuger, the part which. correspondsf tofmy I This construction requ a ivvriir fiili f {.fu I magazine, the insertion of the cartridges one by. 1

one, by meansof .a loa dingtool, which is aptzto get] lostjgandw'ithou which thefownerf oi a Lu er] f he s In ween. on the c rary; the cartridges {lie witntheirbassvery nearlyparallel fto the e ge 44 of the portion I6,"and'hen'ce"'may be loaded by hand through end 40, -which process is much more speedy, and has no tool to lose. 1

I Ofcourse, I could have modified my portion IB by inserting a false back along edge 44, and

then have employed the .Luger portions l1 and I8 unmodified. But thiswould have necessitated using the loading tool, which I was seekingto diagram of portions l6 and I9, I laid a cartridge in the proper position atend 40 of the diagram,-'

[andthe'n laid other cartridges side by sidejupon the-diagram until they reached the further end the last cartridge'andthe edge 44 of portion l6,

' spring 23.

and is initially set so as to hold the follower.

was the angle employed by me for attaching portion l8. The reason why I could not simply employ the inclination of the base of the first cartridge, is due to a slight difierence in width at point and base of the particular ammunition.

Furthermore, I found that, if a less angle were employed, the bullets would nose-down, upon emerging from end 40, and, instead of entering the chamber of the gun, would jam. Whereas, if a greater angle were employed, the magazine would not load by hand. These considerations determine the exact angle for use with any particular caliber of gun and type of ammunition.

In the exemplification shown, it happens to The cover of the Luger magazine has, a truncated conical portion 21 which projectsinto the truncated conical portion H of the magazine, leaving between them a space 22 just wide enough to hold a row of cartridges. I have had to modify the-depthof this cover, to fit American ammunition, but it remains functionally the same. Portion 2| contains a very powerful spiral This spring is attached to shaft 24,

25 firmly against notch 26 in gilide 21. Keyed to the opposite end of shaft 24, on the outside of cover 20, is lever 28. Pivoted on the outer end of lever 28 is a handle 29.

The spring 30, shown in'Figure 3, is inserted with its wide end 3| in the Colt magazine l6, and its small end bearing against the face33 of follower 25. 'I'hisface is bent back by me at an angle from-the conventional Luger position. 7

Without such bending, I found'that even my careful calculation of the other angle, already discussed, would avail me nothingthe bullets would jam. The angle at which to set the follower should be substantial; practically equivalent to the other angle already discussed, or even slightly more. All this is empirical.

About twelve cartridgescan be inserted .in the Colt magazine in the ordinary way, until spring is compressed to the utmost. To insert more cartridges-handle .29 is swung down to its ex--' tended position, shown in dotted lines at .the bottom of Figure 1.- It, and lever 2-8, are .then rotated clockwise to the dotted position shown at the right in Figure 4. Plunger 34 (seeFi'gures 2 and 6) is then depressed against its spring 35, until its foot 36, enters the wide portion 31 of the slot 38. Upon releasing the manualpressure on handle 29, foot 36. catches in the narrow portion 39 of the slot. I

Follower 25 is 'nowin its fully retracted position, as shown dotted in Figure 5, and the rest of the cartridges can now be, inserted by hand, at the end 40 of the magazine, against merely the light pressure .of spring 30.

When the magazine has thus been charged, foot 36 is released from slot 38, and handle 29 is folded back into its normal position. The magazine is now ready for use.

It is tobe understood that the cover 20 is not removed during this process, nor in fact ever except for repairs, it being secured in place by a single bolt through hole 4|, and by screw 42 inserted in threaded hole 43. f

It is to be understood that the word follower in the claims refers to the follower 25, and not to the end 3| of the spring 30.

Having now described and illustrated one form of my invention, I wish it to be understood that 'my invention is not to be limited to the specific form or arrangement of parts hereinbefore described, except insofar as such limitations are specified in the appended claims.

I claim:

1. In -a magazine for an automatic or semiautomatic pistol, the combination of: a straight portion, of a width just sufficient to permit easy passage of the cartridges to be fired, and of a depth substantially that of the length of the cartridges; and a trunco-conical portion, setat such an angle to the straight portion that, when the straight portion is filled with cartridges, the base of the last cartridge willr be substantially parallel to the bases of the truncated cone; a long spiral spring within the two portions, and

having at one end cartridge-impelling means;

and a spring-actuated follower within the trunco-conical portion, pivoted at the axis of the trunco-conical portion, and bearing on theother end of the long spring, the relative inclination between the bearing face of the ,followerand that end of the spring against which it bears being such as to bias the spring through ,a substantial angle, practically equivalent to the angle first referred to.

2. Ina magazine ,for an automatic or semiautomatic pistol, the combination ofjv a straight portion, of a width just sufiicient to permit easy passage of the cartridges to be fired, and .of a depth substantially that of the length of the cartridges; and a trunco-cionical. portion, set at an angle to the straightportion; a long ,spiral spring within the twoportions, and having at one end cartridge impelling means; and a spring-actuated follower within, the trunco-conical portion, and bearingon the other ,end of the practically equivalent to the angle firstreierred CHARLES J. MICHAL, JR. 

